243225 has 36 divisors (see below), whose sum is σ = 464256. Its totient is φ = 121440.

The previous prime is 243209. The next prime is 243227. The reversal of 243225 is 522342.

It is not a de Polignac number, because 243225 - 2⁴ = 243209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243198 and 243207.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 243225.

It is not an unprimeable number, because it can be changed into a prime (243227) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5152 + ... + 5198.

It is an arithmetic number, because the mean of its divisors is an integer number (12896).

2²⁴³²²⁵ is an apocalyptic number.

243225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243225 is a deficient number, since it is larger than the sum of its proper divisors (221031).

243225 is a wasteful number, since it uses less digits than its factorization.

243225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86 (or 78 counting only the distinct ones).

The product of its digits is 480, while the sum is 18.

The square root of 243225 is about 493.1784666832. The cubic root of 243225 is about 62.4217687856.

Adding to 243225 its reverse (522342), we get a palindrome (765567).

It can be divided in two parts, 24 and 3225, that added together give a square (3249 = 57²).

The spelling of 243225 in words is "two hundred forty-three thousand, two hundred twenty-five".